Directory traversal vulnerability in RaidenFTPD Server 2.1 before build 952 allows attackers to access files outside the ftp root via dot dot attacks, such as (1) .... in CWD, (2) .. in NLST, or (3) ... in NLST.
https://exchange.xforce.ibmcloud.com/vulnerabilities/6455
http://archives.neohapsis.com/archives/bugtraq/2001-04/0465.html